Sexual and drug use behaviors associated with HIV and other sexually transmitted infections among female sex workers in the Mexico–US border regionUlibarri, Monica Da; Strathdee, Steffanie Aa; Patterson, Thomas LbCurrent Opinion in Psychiatry: May 2010 - Volume 23 - Issue 3 - p 215–220 doi: 10.1097/YCO.0b013e32833864d5 Addictive disorders: Edited by John B. Saunders and Linda B. Cottler Abstract Author Information Purpose of review The purpose of this review is to summarize the latest research regarding HIV/sexually transmitted infection (STI) risk among female sex workers (FSWs) along the Mexico–US border. Although Mexico has a low prevalence of HIV overall, HIV prevalence among FSWs in Tijuana is quite high, and even higher among FSWs who inject drugs (FSW-IDUs). Efforts to better understand and curtail the HIV epidemic among FSWs in this region are greatly needed. Recent findings A brief HIV/STI risk reduction intervention for FSWs was successful in decreasing HIV/STI sexual risk behavior with clients among FSWs in Tijuana and Ciudad Juarez, Mexico. However, the intervention was less effective among FSW-IDUs, and had no effect on FSWs' condom use with their noncommercial partners. Whereas the majority of research thus far has focused on FSWs' individual-level risk factors, comparatively less is known about their clients and noncommercial sexual partners who may heavily influence their behavior, and engage in high-risk behaviors themselves. Summary Further studies including FSWs' intimate partners and clients are needed as well as interventions specific to FSW-IDUs. Targeting the most at-risk populations and reducing both sexual and injection-risk behaviors simultaneously may curb the growing HIV epidemic in the Mexico–US border region. aDivision of Global Public Health, USA bDepartment of Psychiatry, School of Medicine, University of California—San Diego, La Jolla, California, USA Correspondence to Steffanie A. Strathdee, PhD, University of California, San Diego, School of Medicine, 9500 Gilman Drive La Jolla, CA 92093-0507, USA Tel: +1 858 822 1952; fax: +1 858 534 7566; e-mail: firstname.lastname@example.org © 2010 Lippincott Williams & Wilkins, Inc.